undeclared

adjective

un·​de·​clared ˌən-di-ˈklerd How to pronounce undeclared (audio)
Synonyms of undeclarednext
: not announced or openly acknowledged : not stated or decided in an official way : not declared
an undeclared war
an undeclared presidential candidate
a student with an undeclared major

Examples of undeclared in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
And for vegans, undeclared dairy or eggs can affect health or ethical values. — Miami Herald Archives, Miami Herald, 13 May 2026 The alert is attributed to misbranding and an undeclared allergen because the item contains eggs, which are not identified on the product's label. — Chiara Kim, PEOPLE, 29 June 2026 There’s a mostly undeclared war in Eastern DRC driven by the staggering mineral wealth of the region. — Ivan Buendia Gayton, STAT, 7 July 2026 More than 500,000 packages of macaroni and cheese sold at Aldi have been recalled over a potentially undeclared allergen. — James Powel, USA Today, 15 June 2026 See All Example Sentences for undeclared

Word History

First Known Use

1526, in the meaning defined above

Time Traveler
The first known use of undeclared was in 1526

Rhymes for undeclared

See All Rhymes for undeclared

Browse Nearby Words

undecked
undeclared
undeclinable
See all Nearby Words

Cite this Entry

“Undeclared.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/undeclared. Accessed 10 Jul. 2026.

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More from Merriam-Webster on undeclared

Thesaurus: All synonyms and antonyms for undeclared

Nglish: Translation of undeclared for Spanish Speakers

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